Oil bath



FIG. 1 is an perspective view from the side of a oil bath incorporating the design;

FIG. 2 is a left-side view thereof;

FIG. 3 is a right-side view thereof;

FIG. 4 is a front-side view thereof;

FIG. 5 is a back-side view thereof;

FIG. 6 is a top plan thereof;

FIG. 7 is a bottom plan thereof;

FIG. 8 is an isometric view from the side of an alternative size of the design; and,

FIG. 9 is an isometric view from the side of an alternative embodiment of the design. 

CLAIM The ornamental design for a oil bath, substantially as shown and described. 